The collection comprises the papers of Asher Harer, a member of the Socialist Workers Party and Socialist Action, as well as a trade unionist and anti-Vietnam War activist. It includes correspondence, photographs, reports, resolutions, minutes, notes, study guides, flyers, newsletters, leaflets, newspapers and newspaper clippings, and scrapbooks.

The collection comprises the papers of Nat and Sylvia Weinstein, members of the Socialist Workers Party and founding members of Socialist Action, as well as labor and women's rights activists. It includes reports, resolutions, article drafts, minutes, convention and plenum notebooks and reports, correspondence, speeches, statements, flyers, bulletins, announcements, pamphlets, and newspaper clippings.